Currently on both 13.1 and 13.2 BETA4, there are no settings that allow me to change the mip quality on applications that are running on the high-performance graphics. I've tried uninstalling and reinstalling, they are still missing.
I can change the settings on the power-saving graphics, but only if I go into "standard" view. There is nothing at all to change the high-performance graphics.
Some screen caps:
http://puu.sh/1WoGn.jpg (1 result)
http://puu.sh/1WoHB.jpg (Nothing related to mip mapping in advanced)